My Xperia U isnt even a year old and it is running android Gingerbread however I have a problem with my keyboard. It lags, is unresponsive and is just plain annoying. It wasnt like this until about a month ago. I believe it could be from some apps like VIber and Whatsapp because that is where a problem with the keyboard originated. I was typing a message to a friend on Viber and all of a sudden the keyboard kept typing on its own, it kept pressing the E or M key continuously and i could do nothing to stop it. I then left the app and my phone froze. I then proceeded to taking the battery out because nothing would switch it off. now my phone keyboard is stuffed up. i try to type and keys either wont respond so i have to keep pressing them to work or i will try to press a key but it will press the ones next to them. I seriously have my finger right on top of, say, the "i" key and it will keep pressing "u" or "o" and im dead set serious im pressing the i key, sometimes i try to press the "m" key and it will press backspace instead and i have my finger right on top of "m" yet it still presses back space. I feel like throwing my phone against a brick wall. Its so annoying.
I've tried resetting my phone to factory settings, resetting the software and it worked for a bit and then it messed up again. Could it be a virus? or is something wrong with my actual phone. Ive heard people upgrading to ICS have had problems so im not going to try and upgrade my phone. SHould I just delete viber? i redownloaded it the other day....maybe i should delete it. But i find it strange how those types of messaging apps seem to be the problem. Ok im deleting the app..i only got Viber to message my friends for free whilst at home and its easier to send them pictures. I have viber on my ipod touch 2nd gen but its so tedious to send my friends pictures off my phone cos i have to email them to myself, open them on my ipod, download them etc etc. But im sure this problem wont go away if i just delete the app.
So yeah, I'm really fed up with my keyboard. As i said before, it lags, it is unresponsive and it is so tedious to type with. it takes me 10x longer to type a messsage or a tweet now, unlike before when I could type quickly with no problem. 
If any of you have had the same problem please share your thoughts and what you did to fix it. I thought I'd come here first to see if anyone has had this problem and found a fix to it before going to the store to get it fixed. Im just scared that they will try and fix it but the problem will still be there, using up my warranty. Like I dont want them replacing something only to find that there was something wrong with something else in my phone.
I hope this problem is fixable without having to send it away or get a new one cos this was a birthday present for my 15th birthday and its my first smartphone. Atm i am wanting my old nokia 5000 back because this is just so ANNOYING!!! 
thanks for any help you guys can provide :3
Hi Sam, iv deleted the apps, it's gotten worse. This keyboard problem happens more frequently now. It starts typing on it's own a lot more frequently, whether it be on the lock screen, typing a text message or creating a tweet 😕 it types by itself and doesn't respond 😕 it's bugging me so much. This only started this year last year and up until march/April my phone was working well and I've had no complaints. Now, my phone messes around. I wasn't even touching the screen while in the browser and it was zooming in and out on it's own, I wasn't touching the screen at all and it kept opening up the menu that pops up when you hold your finger down on the homescreen and also went into that overview thing when you have all the widgets on My homescreens come together. I try restarting my phone but it still happens. It's rather annoyig as I can't use this phone for the reason I bought it. To be able to text people, send tweets and emails and the like all on one device at ease 😕 it's such a hassle to type anything on this phone 
and what's worse is it was a birthday present and it isn't working properly :'( I tried some screen tests and te results were rather surprising. What I did was get a drawing app, draw lines all over it screen and saw some areas dont even work! I'm not sure if that is related to this typing on it's own problem. If u want me to include the screenshots just tell me and I'll post them up. Another thing I noticed was that when I open up the camera, there is a purple spot in the screen and my photos now have a purple spot in them What is wrong with my phone? Is there a fix to it? It still runs on gingerbread but I'm just so Sick of encountering all of these problems on my precious phone which at one stage worked absolutely perfectly. So I don't think it was because of the apps. What should I do? I miss the old days when my phone worked perfectly :'(
Hi, thanks for the advice. No, I only download apps from the playstore. I am not really bothered about buying apps anymore either, I always used to buy apps if they were worth it on my iPod touch...but that's dying now too cos it's te 2nd gen one and I can't download apps anymore cos it's still on iOS 4.2.3 or somethig-.- . I just download free ones if I'm interested like temple run and angry birds and twitter. In fact I don't even know how o buy apps off The playstore 
Oh, so do I just connect my phone to my laptop and go to PC companion? How do I reinstall the firmware? I don't want to accidentally do something to my phone and stuff it up forever you see..
If I reinstall the firmware, it wont change my phone to ICS or anything will it? I just don't wanna mess up my phone more seeing as people who have updated theirs to ICS have also had problems..and I don't need anymore problems with this phone
Ok, so if my camera still has the spot after reinstalling the firmware it is a hardware issue? Where do I go to fix that? Do I go to a Sony service center or to the shop I bought it at? I think my dad bought it at Dick Smith..are there even Sony service Centers in sydney? Idk where they are. Would my warranty still be Valid because I bought my phone around Late august/early September last year. It was a magnificent phone until march/April this year :'( I miss the old days D;
Thanks again for the advice.
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